IGX Rubber Pro-Style Dumbbells for commercial gyms offer an economical alternative to urethane encased dumbbells. Each IGX commercial dumbbell are fully encased in impact resistant rubber. This rubber coating helps reduce impact to the dumbbell structure itself when dropped thus reducing the chances of loosening, it also helps to protect floors and surrounding equipment, and they are free from paint that can quickly chip or wear off exposing raw metal to potentially harmful surrounding elements.